High apparent survival of Leach's Storm Petrels Oceanodroma leucorhoa in British Columbia
Bibliographic record
Abstract
Leach's Storm Petrels Oceanodroma leucorhoa were listed as Vulnerable by the IUCN in 2018.Population declines in the western North Atlantic are associated with low annual adult survival rates, but trends and vital rates of populations in the eastern North Pacific are poorly known.To address this knowledge gap, we estimated the annual apparent survival of breeding adults at two colonies off the coast of British Columbia (Rock Islets: 522040N, 1311410W and Cleland Island: 491017N, 1260528W), using capture-mark-recapture data collected between 2006 and 2010.Transient models received substantially more support than standard Cormack-Jolly-Seber models, suggesting that the initial capture and banding reduced burrow fidelity.The model-averaged annual apparent survival rates for both colonies were high (estimate for each colony = 0.975 0.011), compared to rates reported for colonies in the western North Atlantic (< 0.80).Capture effects reduced annual apparent survival estimates for the first year after capture by ca.6%.Higher apparent adult survival at colonies in the eastern North Pacific may be due to lower exposure to direct and indirect anthropogenic stressors while foraging (specifically, marine oil and gas infrastructure) and reduced avian predation by gulls at breeding colonies.The high survival rates we found suggests that eastern North Pacific populations of Leach's Storm Petrels are under less stress than those in the western North Atlantic.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.001 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.010 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".